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12 20 12 21 12 22 12 23 12 24 12 25 12 26 12 27 12 28 12 29 12 30 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid